Ventilator



(No Model.)

P. 0. WERNER.

VENTILATOR.

No. 378,98 Patented Mar. 6, 1888.

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FREDERICK O. \VERNER, OF VATERTOVN, \VISGONSIN.

VENTI LATO R.

FePECIFICATION forming part of Letters Patent No. 378,989, dated March6, 1888.

Application filed August 11, 1887. Serial No. 246,681. (No model.)

and efficiency are obtainable than usual.

I will first describe in detail a ventilator embodying my improvement,and then point out the various features of the improvement in claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure l is a sectional plan view of a ventilator embodying myimprovement. Fig. 2 is a vertical section of the said ventilator on theline w x of Fig. 1, and Fig. 3 is a view of the inner end of the same.

In a circular hole in the vertical side or other wall, A, of the car orother chamber to which the ventilator is to be applied is fitted tightlya collar, B, in which is mounted to turn the inner end of a cylinder, 0,having caps D and D on its inner and outer ends, respectively. Centrallyinthe inner head, D, is held a short cylindrical pipe, E, provided onthe end which projects into the chamber to be ventilated with a flaringmouth,F,across which is arranged a diaphragm, G, provided with aslattedregister, G, for regulating the draft therethrough. The slats of theregister G are all pivotally connected to a regulatingrod, H, which isguided in a keeper, 1, on the edge of mouth F, and is of such length asto ex tend downward within convenient reach of an operator on the fioorof the car or chamber. From the head J on the other end of the pipe 'Etwo diametrically-opposite smallerpipes,

K K, lead toward the outer end of the cylinder 0, first diverging andthen converging at an angle, and at their final point of convergenceenter a cylindrical box, L, arranged at the center of the cylinder G andopening into the side of a large pipe, M, which extends 5o nearly acrossthe interior of the cylinder 0.

The outer end of the cross-pipe M projects through the correspondingside of the cylinder 0, and has a daring mouth, N. The inner end of thecross-pipe M has an annular reducing-collar, O, to receive a smalleraxially-coincident pipe, P, the inner end of which tapers and extendswithin the pipe M a certain distance beyond the opening of the box L,andthe outer end of which projects through the side of the cylinder 0diametrically opposite that holding the pipe M, and has also a flaringmouth, Q. A spring elbow-catch, It, attached to the interior of thefixed collar B in the chamber-wall A, is adapted to engage one of thediametrically-opposite slots S in the cylinder O,for adjusting andlocking the cylinder in position to present the mouth of the smallercross-pipe P to the wind, whether caused by the natural air-currents orby the motion of the car or chamber.

WVith the described construction, the register G being open, the currentof air passing through the induction and eduction crosspipes P and Mwill, as is evident, induce a strong outward draft through the mainflue, comprising the register G, pipes E K, box L, and pipe M, therebythoroughly ventilating the car or chamber without the slightest chanceof dust, cinders, or thelike entering to the same. As the two aircurrents passing through the pipes K meet at an angle in the box L, theyreact upon each other and combine to form a fan-like stream,which, inpassing out of the pipe M, completely surrounds the tapering nozzle ofthe pipe 1?, so as to induce a much stronger draft therein than usual.Further, the ventilator, though of light construction, is extremelystrong, so that it is enabled to resist the heavy currents produced bythe rapid motion of cars.

Having thus fully described my invention, I claim as newand desire tosecure by Letters Patent-- 1. In a ventilator, the combination of acolrco the cylinder 0 into the pipe M, substantially as shown anddescribed.

FREDERICK G. \VERNER.

Witnesses:

IIERMAN T. EnnRLn, A. TANCK.

